Bump KOTLIN_VERSION from 1.7.10 to 1.7.20 (#381)

Bumps `KOTLIN_VERSION` from 1.7.10 to 1.7.20.

Updates `kotlin-gradle-plugin` from 1.7.10 to 1.7.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.7.20/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.7.10...v1.7.20)

Updates `kotlin-stdlib-jdk7` from 1.7.10 to 1.7.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.7.20/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.7.10...v1.7.20)

Updates `kotlin-reflect` from 1.7.10 to 1.7.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.7.20/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.7.10...v1.7.20)

Updates `kotlin-stdlib-jdk8` from 1.7.10 to 1.7.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.7.20/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.7.10...v1.7.20)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib-jdk7
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-reflect
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib-jdk8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -2,7 +2,7 @@ import org.gradle.util.VersionNumber
 
 buildscript {
     ext {
-        KOTLIN_VERSION = '1.7.10'
+        KOTLIN_VERSION = '1.7.20'
         ANDROID_GRADLE_VERSION = '4.1.3'
         JUNIT_VERSION = '5.9.1'
         QUALITY_TOOLS_VERSION = '0.22.0'